Cutter-guard



E. A. WILLIAMS.

CUTTER GUARD.

APPLICATION FILED JULY 7, 1911.

1,334,340. 7 Patented Mar. 1920.

'Wlll i F131. 1

(Ill!!! f7 26 "UNITED stares PATENT OFFICE.

ERNEST A. WILLIAMS, 0]? CINCINNATI, OHIO, ASSIGNUR, BY MESNEASSIGNMENTS, T0

UNITED SHOE MACHINERY CORIORATION, OF PATERSON,

TION OF NEW JERSEY.

NEW JERSEY, A CORPORA- CUTTER GUABD.

Specification of Letters Patent.

Patented Mar. 23, 1920.

Application filed July 7, 1917. Serial No. 179,156.

To all whom it may concern:

Be it known that I, Eiuvrs'r A. WILLIAMs, a citizen of the UnitedStates, residing at Cincinnati, in the county of Hamilton and State oiOhio, have invented certain lim prove'ments in Cutter-Guards, oil whichthe t.iollowing description, in connection with the accompanyingdrawings, is a specification, like reference characterson the drawingsindicating like parts in the several figures.

This invention rel ates to machines for trimming the breasts of Louisheels after they have been attached to shoes, and particularly to aguard for the rotary cutter employed in such machines. A machine forperforming this operation upon the heels of boots and shoes is disclosedand claimed in United States Letters Patent No. 7 84,340, granted March7, 1905, on application of Benjamin F. Mayo.

In the operation of this machine the heel of the shoe is held on asupport and made to traverse a rotary cutter in a direction from side toside of the heel. In this way the breast face of a heel is given a shapeprop.- erly curved longitudinally of the shoe but the portion of thebreast which extends to the shank of the shoe coincides with the curveoi the shank only at the longitudinal median line of the heel, and thelateral portions of the heel breast must be trimmed to the lateral curveof the shank. In the machine ot the above patent there is provided anadditional cutter for this purpose, the shoe being held in the hands ofthe operator and manipulated to cause the cutter to remove the properamount of stock so to form the surface of the heel breast next to theshank that it will merge into or coincide with the lateral curve of theshank. In the machine of the patent a guard is provided on the shaftwith the cutter which either is loose on the shaft so that it is stoppedfrom rotation when brought into contact with the shoe or is fixed on theshaft and rotates with the cutter. This guard engages aportion of theshank where no trimming is to be done and limits the action of thecutter upon the adjacent portions of the heel breast. The guard, evenwhen loose upon. the sha ft, will, because of friction, take up themotion of: the shaft and rotate therewith and, on. account of its rapidrotation when the shoe is presented to it, apt to leave a mark upon. theshoe shank. Furthermore, this type of guard must have a. fixed diameterwhich. cannot be altered to correspond with the diameter of the cutteras the cutter is reduced by grinding.

P n object of this invention to jn'ovhjle an improved guard for a rotarycutter which is stationary so as to prevent injury to the part of theshoe presented to it and which may be adjusted. relatively to the cutterso as to adapt it to cutters of various sizes and. to varying diametersof the same cutter as it is reduced by grinding.

These and other objects of the invention will appear more fully from thefollowing detailed description when read in connection with theaccompanying drawings and will be pointed out in the appended claims.

In the drawings,

Figure 1 is an end elevation of the head of a machine embodying thisinvention;

Fig. 2 is a plan view of the machine, partly in section, showing thework in its relation to the guard and cutter.

The construction of the machine is in general similar to that of theprior patent re ferred to above. As shown herein, the column of themachine is represented at In the upper portion or head 4. of the columnis ournaled a cutter shaft (3 on which is mounted a rotary cutter 8 fortrinnning the lateral portions of the breast 01' a heel to correspondwith the curve of the shank of the sole, the shoe being held for that purpose in the position shown in Fig. 2. The cutter has a rounded cuttingface of a curvature somewhat less than that of the portion oi? the shoeheel between. the breast and. the shank, and outside the cutter isarranged a stationary guard 10 having a fiat portion 12 close to thesides otthe cutter. An edge face 14 of the guard 10 forms substantiallya continuation of the cutting face of the cutter, being rounded. oil onthe side away from the cutter to allow contact of: the guard with thework only on a line adjacent to the cutter. The inner face of the guardinside the flat portion 12 is countcrbored at 15 to avoid possibilityotcontact of. that portion with the cutter. The guard is provided with anopening 16 to admit the end. portion otthe cutter shaft without touchingthe guard.

On a rearward extension of the guard is a split clamp 20 arranged to betightened upon a cylindrical supporting stud 22 by means of a screw 24:-The stud 22 has a threaded extension or stem 26 arranged eccentricallyof the cylindrical stud 22 and threaded into a lug 28 on the frame ofthe machine head. A set nut 30 is provided on the stem 26 to clamp thestem against rotation in the threaded lug 28. The stud 22 is providedwith a screw driver slot 32 so that it may be turned with the threadedportion 26 when the nut 30 is loosened. When the screw 24 of the clamp20 and the nut 30 are loosened, the eccentric stud 22 may be turned andthe work engaging portion of the guard thereby adjusted in and out withrelation to the cutting face or periphery of the cutter. Up and downadjustments of the guard may be effected by swinging the guard on thestud 22, and the guard may be adjusted toward and from the cutter bysliding the guard longitudinally of the stud 22. WVhen the screw 24 andthe nut 30 are tightened the guard is fixed in adjusted position.

In the use of this machine equipped as shown herein, the shoe is held inthe operators hands in the position illustrated in Fig. 2 of thedrawings with the portion 14 of the guard in contact with the shankportion of the sole from which no stock is to be removed, the cutterbeing then adjacent to the portion of the breast of the Louis heel whichextends toward the shank of the shoe. The guard has been so adjustedbackwardly or forwardly (that is, toward or from the operator) that thecutter will reach the proper distance beyond the guard and the shoe isrocked and moved up and downin contact with the guard until the portionof the heel which extends toward the shank is made flush with the curveof the shank at all points laterally of the shoe. Since the guard isstationary, all danger of marking or injuring the sole by contact withthe guard is avoided, whereas contact of the sole I with a rotary guardas in prior constructions shoe to cut'progressively from was very likelyof the sole. Having fully described my invention, I claim as new anddesire to secure by Letters Patent of the United States:

'1. In a machine for treating heels which have a portion of the breastface extending over-the shoe shank, the combination of a shaft, a cuttermounted thereon adapted to trim from the overlying portion of the breastof the heel of the shoe portions of saidbreast adjacent to the shank ofthe sole between said edges and the central part of the shank, saidcutter being arranged upon relative movement of the cutter and shoe in adirection transversely of the length of the one side of to mar or defacethe surface the breast to the other side, and a stationary guardarranged to engage the shank of the sole at a point adjacent to the partof the heel which is being operated upon by the cutter and shapedrelatively to the cutter to guide the shoe during said transversemovement and to permit the cutter to trim said portion of the breastwhile the guard engages the shank of the sole.

2. In a machine for treating heels which have a portion of the breastface extending over the shoe shank, a shaft, a cutter mounted thereonadapted to trim from the overlying portion of the breast of the heel ofthe shoe portions of said breast adjacent to the shank of the sole ofthe shoe between the side edges and the central part of the shank ofsaid sole, said cutter being arranged upon relative movement of thecutter and shoe in a direction transversely of the length of the shoe tocut progressively from one side of the breast to the other, a.stationary guard arranged to engage the shank of the sole at a pointadjacent to the part of the heel which is being operated upon by thecutter and shaped relatively to the cutter to guide the shoe during saidtransverse movement and. to permit the cutter to trim said portions ofthe breast while the guard engages the shank of the sole, and means foradjusting the guard to expose more or less of the cutter for action uponthe shoe.

3. In a machine of the class described, a shaft, a cutter mountedthereon adapted to trim from the breast of the heel of a shoe portionsof said breast adjacent to the shank of the sole of the shoe between theside edges and the central part of the shank, a guard for engaging theshank of the sole during the operation of the cutter, a rearwardextension on the guard, an eccentrically mounted stud entering saidextension, means for clamping the extension on the stud, and means forholding the stud. against rotation.

4. In a machine of the class described, a shaft, a cutter mountedthereon, a guard for engaging the work during operation of the cutterand having a rearward extension provided with a. clamp, a cylindricalmember upon which the extension is clamped, an cecentric mounting forthe cylindrical member, and means for holding the cylindrical memberagainst rotation.

In a machine of the class described, :1 shaft, a cutter mounted thereon,a guard. for the cutter having a rearward extension provided with asplit clamp, a cylindrical stud embraced by said clamp and upon whichthe guard is adjustable both longitudinally of the stud and about thestud as a. pivot, and means for securing the stud in ad usted positionforwardly and rearwardly.

In a machine of the class described, a

shaft, a cutter mounted thereon, a cutter guard having a rearwardextension provided with a split clamp, a cylindrical stud embraced bysaid clamp and upon which the guard is adjustable both longitudinally ofthe stud and about the stud as a pivot, a threaded extension on saidstud arranged eccentrieally of the stud and engaging a threaded hole inthe frame, and means for holding the extension against rotation in theframe. 10

In testimony whereof I have signed my name to this specification.

' ERNEST A. WILLIAMS.

